CWOP Information for DW3973 (D3973) in Corona Horsethief, CA, US

The following information is known about DW3973. If you think that any information is incorrect, then please follow the instructions for correcting that data item.

It is possible that this page will report a problem where no problem exists. If you believe that this has happened, then please contact me (address at the bottom of this page) and explain clearly why you think this page is in error. Note that any changes that you make may take a few days to show up here, so please give it a week before commenting.

Registered Location

Latitude: 33° 43' 52" N (deg min sec), 33.7310° (decimal), 3343.86N (LORAN)
Longitude: 117° 25' 59" W (deg min sec), -117.4332° (decimal), 11725.99W (LORAN)
Elevation: 431 metres (1412 feet) -- validated against 426 metres (1398 feet) from Google
Location: Corona Horsethief, CA, US
County: Riverside, CA
Forecast Offices: San Diego (SGX), Phoenix (PSR)
Weather station Manager/Operator: Tom
Station type/software: Virtual Weather Station / DavisVP2

The site location should be at the mark shown -- or very close.

If the displayed location (or elevation) of the weather observing location is incorrect, please drag the marker to the right location (or click in the right location), and then send the updated information. Please note that we are trying to spot either the Stevenson Screen (or equivalent) or the location where the barometric readings are taken.

NOTE: The Registered Location is the location that the station owner provided when they signed up with CWOP. Show location history.

Date	Latitude	Longitude	Elevation	Name
2015-01-09	33.7310	-117.4332	445	Corna, CA, US
2016-12-07	33.7310	-117.4332	445	Corona Horsethief, CA, US
2021-04-12	33.7310	-117.4332	445	DW3973 Corona Horsethief, CA, United States Of America
2021-04-13	33.7310	-117.4332	430	Corona Horsethief, CA, US

The position of the clicked point on the map is:

The position of the 'DW3973' marker on the map is:

Latitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Longitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)

There are no photographs of the station. If you are the site operator and have pictures of this location, then please email them to d3973@photo.gladstonefamily.net.

Picture Submission

There are two ways to submit pictures. If you are a flickr user, then see the flickr section below. Otherwise you can simply email the pictures as follows:

Email the pictures to d3973@photo.gladstonefamily.net.
If you use a smartphone that embeds the GPS coordinates in the pictures, then you can send any picture of a weather station to gps@photo.gladstonefamily.net and it will be associated with the correct station automatically.

Flickr Upload

Uploading picktures to flickr.com is easy. If you do not have a free flickr account, then you need to create one. Just go to flickr and click the 'Create your account' button. You can use a google account if you have one.

Once logged in, click on 'Upload Photos & Video'. Next click on 'Choose Photos and Videos', and walk through the process to upload your pictures. They will automatically be resized appropriately.

After the upload is complete, it will ask you to add titles, tags and descriptions. The key step is to add tags as follows:

wxtagged -- this indicates that this picture is of a weather station or surrounding area
wx:cwop=d3973 -- this indicates the site of which this is a picture
wxstation -- add this tag if the picture includes the weather station.

If you had to create your account, then you must upload at least five pictures. It will also take longer for your pictures to appear (a week or so). Otherwise, the pictures should appear after 24-48 hours.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are some) (There are none) (There may be some) (Automatically loaded if any)

Data Status

Over the last 7 days, no data was seen on the following dates: 2025-03-06 to 2025-03-10.

A reasonably recent weather report (456 days ago) received from this station was
DW3973>APRS,TCPXX*,qAX,CWOP-5:!3343.86N/11725.99W_173/000g003t054r000P000p000L000h16b10147.VWS-DavisVP2

Recent observations from this weather station can be downloaded as a CSV file suitable for importing into various spreadsheet programs: last 7 days, last 14 days, last 28 days, last 56 days. This data can also be linked directly from Excel using a Web Query. The main link goes to the page with the data on it, and the IQY link is the Web Query that will access it: last 7 days (IQY: last 7 days), last 14 days (IQY: last 14 days), last 28 days (IQY: last 28 days), last 56 days (IQY: last 56 days).

All the means and standard deviations shown below are from the last 7 days. Change analysis period to Last 3 days Last 14 days Last 4 weeks Last 8 weeks Last 13 weeks Last 26 weeks Last 39 weeks Last 52 weeks

Neighboring Stations

This is a list of stations that are close to this station. You can look at those for comparison purposes. The average difference between your station and each station below is listed as well. This may allow you to detect local stations which are erroneous. You can also use these numbers to adjust your instruments -- especially if a number of ASOS stations have similar differences to your station. Also, try increasing the analysis period to more than the default 28 days. The difference is only given if both stations report reasonably often during each day. Some stations only report every 6 hours, and this makes the average of less interest. In this case, the average is not displayed. The values reported are the differences between this station and the neighboring station. I.e. if the difference is positive, then this station is reading higher than the neighboring station. Since this station has not been reporting continuously during the analysis period (it missed 5 days out of 7), the offsets below may not be accurate.

You can also subscribe to an RSS feed to tell you when new stations come online in this area. Choose either within 100 miles or 250 miles . For stations covered by your Forecast Office: San Diego (SGX),Phoenix (PSR) .

Site	Distance		Location
DW7531	0.3 miles	Northeast	Corona, CA, US (lat 33.7338°, long -117.4295°, altitude 406 metres)
GW4544	2.5 miles	Northwest	CORONA, CA, US (lat 33.7532°, long -117.4675°, altitude 347 metres)
CW7445	2.7 miles	Northwest	Temescal Valley, CA, US (lat 33.7675°, long -117.4514°, altitude 409 metres)
GW2772	9.2 miles	Southwest	Trabuco Canyon, CA, US (lat 33.6537°, long -117.5637°, altitude 417 metres)
EW3131	11.9 miles	Northwest	Pleasants Peak, CA, US (lat 33.7990°, long -117.6233°, altitude 1179 metres)
WX6YYZ	13.1 miles	Northwest	Norco, CA, US (lat 33.9050°, long -117.5247°, altitude 298 metres)
FW0117	13.7 miles	Southwest	Lake Mission Viejo, CA, US (lat 33.6371°, long -117.6419°, altitude 216 metres)
DW4438	14.0 miles	Northeast	Riverside, CA, US (lat 33.9000°, long -117.3000°, altitude 526 metres)
FW4558	15.0 miles	Northwest	Corona, CA, US (lat 33.9058°, long -117.5877°, altitude 174 metres)
KJ6HT	15.6 miles	North	Riverside, CA, US (lat 33.9503°, long -117.4928°, altitude 262 metres)

Location Formats

The location is shown in three different formats. Each of these is used in some software, and is shown on some websites.

Degrees Minutes Seconds: VWS/VWSAPRS, WeatherLink 5.5, WeatherLink (5.2-5.4), WeatherView (Linux)

Decimal degrees: FreeWX, WeatherView32 (PC application)

LORAN: WeatherDisplay, WUHU, Henriksen WServer

Resources

CWOP Home: This describes the whole CWOP program and has a large amount of useful information.

CWOP Siting Guide (PDF): This is a guide to siting and operating a CWOP station. This is a must-read document.

Another CWOP Guide (PDF): This is another guide to siting and operating a CWOP station. This is a must-read document.

Urban Siting and Operations (PDF): This is a guide to siting and operating a CWOP station in an urban environment.

APRS WX Message format: This describes the actual format of the messages transmitted that carry WX information.

WXQC Mailing List: This is a mailing list where data quality issues are discussed. Assistance with software configuration can often be found here.

Topo Map Reading Guide: How to read USGS topographic maps, with a good section on reading contours.

Geographically nearby web pages: Use Geourl to find web pages that deal with locations geographically close to this site.

Overall website comments, problems etc to Philip Gladstone
Page layout last modified Sunday, 28 February 2016
Questions for this weather station owner/operator to Tom
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